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OTHER LONG-TERM DEBT (Credit Line) (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Line of Credit Facility [Line Items] |  |  |
Outstanding capital lease liability | $ 139,037 | $ 159,650 |
Lease liability | 36,282 | 34,863 |
Operating lease cost | 7,069 |  |
TSNP [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing amount | 70,000 |  |
Borrowing capacity | 56,000 |  |
Letters of credit outstanding amount | $ 500 |  |
TSNP [Member] | Prime Rate [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Basis spread over variable interest rate | 0.00% |  |
TSNP [Member] | Prime Rate [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Basis spread over variable interest rate | 0.50% |  |
TSNP [Member] | LIBOR [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Basis spread over variable interest rate | 1.25% |  |
TSNP [Member] | LIBOR [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Basis spread over variable interest rate | 1.75% |  |
Office space operating facilities and vehicles [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Operating lease cost | $ 7,535 | $ 7,627 | $ 8,045
TPSCo [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Annual interest rate of lease agreement | 2.00% |  |
TPSCo [Member] | Term Loan 2018 [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Basis spread over variable interest rate | 1.95% |  |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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